Nov 25, 2005 · The 7440NA ( amber) is the WY21W 7440 (W21W) 7440NA Amber (WY21W) Hope this helps. #2 rcsting, Nov 1, 2009.

Jul 31, 2019 · A 2009 post mentioned the 7440NA is a replacement for this bulb. Can someone please verify whether this is ...